phelan



Patented Aug. 9, 1892 Fig .1.

(No Model.) 2 Sheets-Sheet 2.

J. T. PHELAN. FUMIGATOR.

No. 480,624. Patented Aug. 9, 1892.

0 a J I 0000 I V 1 00000 3 J, 9 \l\/ l WIT Est-355' I l E Tu UNITEDSTATES PATENT OFFICE.

JOHN T. PHELAN, OF CAMBRIDGE, MASSACHUSETTS.

FUMIGATOR.

SPECIFICATION forming part of Letters Patent No. 480,624, dated August9, 1892.

Application filed July 3, 1891- Serial No. 398,359. (No model.)

To all whom it may concern.-

Be it known that I, JOHN T. PHELAN, of Cambridge, in the county ofMiddlesex and State of Massachusetts, have invented a new and usefulImprovement in Apparatus for Impregnating Air with Gas, Smoke, or Vapor,of which the following, taken in connection with the accompanyingdrawings, is a speci-' fication.

The object of this invention is the production of a device whereby alarge volume of airimpregnated with tobacco-smoke, sulphurous-acid gas,or any other disinfecting gas or vapor, the vapor of oil of peppermint,or any other volatile oil may be produced under pressure or otherwise,so as to be available for use in testing the tightness of sewerpipes,for disinfecting pipes or rooms byvfilling them with a disinfecting gasor vapor, or for destroying insects in green-houses by filling thelatter with tobacco-smoke.

To this end the invention consists, first, in the combination,substantially as and for the purpose set forth, of the chamber of areceptacle for the burning tobacco-stems or other source of smoke, gas,or vapor, arranged under the mouth of the pipe through which air isforced into the chamber, separated from the inner walls of the chamberby a space with which the eduction-pipe communicates, and having in itnear its base a series of perforations through which the smoke, gas, orvapor passes into the space between the receptacle and the inner wallsof the chamber; and, second, in the combination, substantially as andfor the purpose hereinafter more fully set forth, with the chamberaforesaid, of two Vertical air-pumps supported upon a common base andarranged on opposite sides of the chamber and operated alternately bythe same handle, whereby a compact, portable, and easily-operatedapparatus is obtained.

The accompanying drawings represent an apparatus which embodies theprinciple of my invention, and in Which- Figure 1 is a view inelevation. Fig. 2 is a In the several figures the same letters refer tothe same parts.

Referring to the drawings, A is a suitable base-plate, and BB are twovertical condensing air-pumps of the ordinary construction supportedupon this base.

C is a chamber, of metal, preferably cylindrical, which is locatedbetween the air-pumps and is attached at each side to the top, thecylinder of the air-pump on that side. The top and bottom of the chamberC are each formed by a plate D D, which is capable of being screwed tothe walls of the cylinder, thus making it gas-tight. In order to permitthe convenient removal of the bottom of the cylindrical chamber C, thelength of the cylinder is preferably only about two-thirds the length ofthe cylinders of the air-pumps.

E E are the piston-rods of the air-pumps, and these rods are attached toa horizontal bar F, which bar is pivoted to a rod G, which is attachedto the top of an arch of metal I-I, attached at each end to ear-piecesI, extending out from the top of the walls of the chamber C or to thetop of the pump. This arch is used for the purpose of permitting theconvenient removal of the top D of the chamber C.

Upon each end of the bar F is a suitable handle,which is grasped in eachhand when it is desired to oscillate the bar and operate the pumps. Thebottom of each cylinder communicates with the external air by means ofan opening closed by a suitable valve, and from near the bottom of eachcylinder extends a pipe L L, which is connected to the vertical pipe M,which opens into the chamber C near its upper part. This pipe M extendsinto the chamber C and is then bent downward.

Secured to the bottom plate D is a ring of metal N, into which is fittedthe bottom of the conical receptacle 0, which at its upper part isprovided with a lip, by which it is caused to fit tightly to the wallsof the chamber and whereby a space is formed between the receptacle 0and the inner walls of the chamber. The pipe P, extending out from thischamber, communicates with this space,

and in this pipe is a suitable stop-cock B. To the end of this pipe maybeattached a rubber tube or any other pipe, by means of which the smoke,gas, or vapor produced in the chamber 0 can be carried to the desiredplace, and there may also be abranch pipe in which may be placed apressure-gage.

I have represented the receptacle as placed between two air-pumps, thepistons of which are attached to a common handle, which is grasped byboth hands. By this meansIobtain a convenient machine, which is veryeasily operated; but I do not limit my invention to this particular formof apparatus, but can use any suitable form of pump for forcing air intothe chamber, which contains the tobacco-stems or the other smoke orvapor producing material.

placed in the receptacle 0 and are then ignited by placing a burningcoal upon them or in any other suitable manner. Air is then forcedthrough the pipe M by means of the air-pumps or in any other suitablemanner and a large Volume of smoke is produced, which passes through theperforations in the walls of the receptacle 0 into the space between thereceptacle 0 and the chamber G, and thence to the pipe P. The ashes fallinto the receptacle N, which is attached to the bottom D of the chamberG. If it is desired to produce sulphurous-acid gas, sulphur may beburned in the receptacle 0, or, it any volatile vaporis to beproducedas, for example, the vapor of oil of peppermint-a sponge or anyother suitable article saturated with this substance producing thevolatile vapor may be placed in the receptacle 0 and a current of airfrom the pipe M may be forced onto the same. The pressure-gage isconvenient as indicating the amount of pressure at which the smoke orvapor escapes from the pipe P.

Having thus described my invention, what I claim, and desire to secureby Letters Patent of the United States, is

1. The combination, substantially as and for the purpose set forth, ofthe chamber 0, removable plates D D for sealing the chamber O air-tightat top and bottom, the conical receptacle 0, fitting tightly at its topinto the chamber, but below separated from the walls of the chamber by aspace, perforations in said receptacle, a pipe M, opening above thereceptacle, a pipe I, communicating with the space between thereceptacle and the walls of the chamber 0 and provided with a stopcock,an air-pump, or any other device for supplying air under pressure andconnected to the pipe M, and a chamber N for receiving the bottom of thereceptacle and secured to the removable plate D.

2. The combination, substantially as and for the purpose set forth, ofthe base-plate A, the vertical air-pumps B B, supported upon the same,the chamber 0, supported between the air-pumps, the arch H, secured ateach end, respectively, to opposite sides of the chamber 0, the handleF, pivoted to the arch H and attached to the .rods E E, the crosstom,the Vertical pipe B, extending into the chamber 0 and opening above thereceptacle 1 O, the pipe P, extending from the chamber G and openinginto the space between the receptacle and the chamber, and the stop-cockR in the said pipe.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN T. PHELAN.

Witnesses:

ALEX. L. HAYES, AUGUSTINE J. DALY.

